html, body
  font-weight: 200
.clearfix
  display: inline-block
  &::after
    display: block
    content: ''
    height: 0
    line-height: 0
    clear: both
    visibility: hidden
@media (min-device-pixel-ratio: 1.5),(-webkit-min-device-pixel-ratio: 1.5)
  .border-1px
    &::after
      transform: scaleY(0.7)
      -webkit-transform: scaleY(0.7)
@media (min-device-pixel-ratio: 2),(-webkit-min-device-pixel-ratio: 2)
  .border-1px
    &::after
      transform: scaleY(0.5)
      -webkit-transform: scaleY(0.5)
  